3121185386040 has 32 divisors (see below), whose sum is σ = 9363556158480. Its totient is φ = 832316102912.

The previous prime is 3121185386027. The next prime is 3121185386087. The reversal of 3121185386040 is 406835811213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3121185385983 and 3121185386001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13004938989 + ... + 13004939228.

Almost surely, 2^{3121185386040} is an apocalyptic number.

3121185386040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121185386040 is an abundant number, since it is smaller than the sum of its proper divisors (6242370772440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121185386040 is a wasteful number, since it uses less digits than its factorization.

3121185386040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26009878231 (or 26009878227 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 3121185386040 in words is "three trillion, one hundred twenty-one billion, one hundred eighty-five million, three hundred eighty-six thousand, forty".